EP1145243A3 - Copy protection by message encryption - Google Patents
Copy protection by message encryptionInfo
- Publication number
- EP1145243A3 EP1145243A3 EP99932846A EP99932846A EP1145243A3 EP 1145243 A3 EP1145243 A3 EP 1145243A3 EP 99932846 A EP99932846 A EP 99932846A EP 99932846 A EP99932846 A EP 99932846A EP 1145243 A3 EP1145243 A3 EP 1145243A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- ticket
- key
- copy
- embedded watermark
- receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 claims abstract description 79
- 238000000034 method Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims 2
- 238000012545 processing Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00884—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
- G11B20/00898—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm based on a hash function
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00224—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is obtained from a remote server
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00485—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
- G11B20/00557—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein further management data is encrypted, e.g. sector headers, TOC or the lead-in or lead-out areas
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
- G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
- G11B20/00811—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein said number is encoded as a cryptographic token or ticket
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/00884—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0838—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these
- H04L9/0841—Key agreement, i.e. key establishment technique in which a shared key is derived by parties as a function of information contributed by, or associated with, each of these involving Diffie-Hellman or related key agreement protocols
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
- G06F2211/007—Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2107—File encryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91328—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91335—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a watermark
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US9272798P | 1998-07-14 | 1998-07-14 | |
US92727P | 1998-07-14 | ||
US33362899A | 1999-06-15 | 1999-06-15 | |
US333628 | 1999-06-15 | ||
PCT/EP1999/004766 WO2000004549A2 (en) | 1998-07-14 | 1999-07-07 | Copy protection by ticket encryption |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1145243A2 EP1145243A2 (en) | 2001-10-17 |
EP1145243A3 true EP1145243A3 (en) | 2004-11-03 |
Family
ID=26785979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99932846A Withdrawn EP1145243A3 (en) | 1998-07-14 | 1999-07-07 | Copy protection by message encryption |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1145243A3 (en) |
KR (1) | KR20010023967A (en) |
CN (1) | CN1333975A (en) |
TW (1) | TW406249B (en) |
WO (1) | WO2000004549A2 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8261315B2 (en) | 2000-03-02 | 2012-09-04 | Tivo Inc. | Multicasting multimedia content distribution system |
US7908635B2 (en) | 2000-03-02 | 2011-03-15 | Tivo Inc. | System and method for internet access to a personal television service |
US8812850B2 (en) | 2000-03-02 | 2014-08-19 | Tivo Inc. | Secure multimedia transfer system |
US8171520B2 (en) | 2000-03-02 | 2012-05-01 | Tivo Inc. | Method of sharing personal media using a digital recorder |
US20020166056A1 (en) * | 2001-05-04 | 2002-11-07 | Johnson William C. | Hopscotch ticketing |
CN100364332C (en) * | 2004-09-01 | 2008-01-23 | 华为技术有限公司 | Method for protecting broadband video-audio broadcasting content |
CN100356789C (en) * | 2004-09-01 | 2007-12-19 | 华为技术有限公司 | Method and device for protecting broadband audio-video broadcasting content |
JP4897698B2 (en) | 2004-11-19 | 2012-03-14 | ティヴォ インク | Method and apparatus for securely transferring previously broadcast content |
JP4140624B2 (en) * | 2005-09-16 | 2008-08-27 | ソニー株式会社 | Information processing apparatus, information recording medium manufacturing apparatus, information recording medium and method, and computer program |
CN101052068B (en) | 2006-04-03 | 2011-04-06 | 华为技术有限公司 | Device and method for providing wet current |
US20090316890A1 (en) * | 2006-12-11 | 2009-12-24 | Mark Alan Schultz | Text based anti-piracy system and method for digital cinema |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5574787A (en) * | 1994-07-25 | 1996-11-12 | Ryan; John O. | Apparatus and method for comprehensive copy protection for video platforms and unprotected source material |
KR0136458B1 (en) * | 1994-12-08 | 1998-05-15 | 구자홍 | Copy protection apparatus of digital magnetic recording and reproducing system |
CA2179223C (en) * | 1995-06-23 | 2009-01-06 | Manfred Von Willich | Method and apparatus for controlling the operation of a signal decoder in a broadcasting system |
US6047103A (en) * | 1995-10-09 | 2000-04-04 | Matsushita Electric Industrial Co., Ltd. | Data transmitter, data transmitting method, data receiver, information processor, and information recording medium |
WO1997043853A1 (en) * | 1996-05-15 | 1997-11-20 | Macrovision Corporation | Method and apparatus for copy protection of copyrighted material on various recording media |
AU5493398A (en) * | 1997-01-27 | 1998-08-18 | Koninklijke Philips Electronics N.V. | Method and system for transferring content information and supplemental inform ation relating thereto |
JP3794646B2 (en) * | 1997-08-26 | 2006-07-05 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | System for transferring content information and supplementary information related to it |
-
1999
- 1999-07-07 EP EP99932846A patent/EP1145243A3/en not_active Withdrawn
- 1999-07-07 KR KR1020007002682A patent/KR20010023967A/en active IP Right Grant
- 1999-07-07 WO PCT/EP1999/004766 patent/WO2000004549A2/en active IP Right Grant
- 1999-07-07 CN CN99801574A patent/CN1333975A/en active Pending
- 1999-07-30 TW TW088113007A patent/TW406249B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP1145243A2 (en) | 2001-10-17 |
KR20010023967A (en) | 2001-03-26 |
WO2000004549A2 (en) | 2000-01-27 |
CN1333975A (en) | 2002-01-30 |
WO2000004549A3 (en) | 2001-06-07 |
TW406249B (en) | 2000-09-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
XX | Miscellaneous (additional remarks) |
Free format text: DERZEIT SIND DIE WIPO-PUBLIKATIONSDATEN A3 NICHT VERFUEGBAR. |
|
PUAK | Availability of information related to the publication of the international search report |
Free format text: ORIGINAL CODE: 0009015 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: 7H 04N 5/913 A |
|
17P | Request for examination filed |
Effective date: 20011207 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20041123 |